Abstract
Cluster roots enhance phosphorus (P) acquisition in macadamia (Macadamia integrifolia), yet their development under different P levels and effects of different grafted scion/rootstock combinations are not well understood. This study examined cluster root formation in seedlings under varying soil P levels and evaluated cluster root differences between two different rootstocks, each grafted with five different scions. Cluster roots first appeared at 42 days after planting (DAP), with low P promoting greater root number but without increasing biomass. High P application (800 mg P pot−1) suppressed cluster root number by around 50%, corresponding to leaf P concentrations of ~1.05 mg g−1. Scions and rootstocks influenced cluster root development, with the H2 rootstock supporting more cluster roots than Beaumont. These results show that cluster root formation in macadamia is modulated by both P availability and genetics.
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Claims 7
Claim · model-written summary
Macadamia cluster roots first appeared 42 days after planting.
- Taxon
- macadamia (Macadamia integrifolia)
Macadamia integrifoliae0 - Outcome
- Cluster roots first appearede1
- Value
- 42 days after plantinge1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Cluster roots enhance phosphorus (P) acquisition in macadamia (Macadamia integrifolia)”
e1“Cluster roots first appeared at 42 days after planting (DAP)”
Claim · model-written summary
Low phosphorus promoted greater cluster root number.
- Taxon
- macadamia (Macadamia integrifolia)Macadamia integrifoliae0
- Treatment
- low Pe1
- Outcome
- root numbere1
- Direction
- greatere1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Cluster roots enhance phosphorus (P) acquisition in macadamia (Macadamia integrifolia)”
e1“low P promoting greater root number but without increasing biomass”
Claim · model-written summary
Low phosphorus did not increase biomass.
- Taxon
- macadamia (Macadamia integrifolia)Macadamia integrifoliae0
- Treatment
- low Pe1
- Outcome
- biomasse1
- Direction
- without increasinge1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Cluster roots enhance phosphorus (P) acquisition in macadamia (Macadamia integrifolia)”
e1“low P promoting greater root number but without increasing biomass”
Claim · model-written summary
High phosphorus suppressed cluster root number by around 50%.
- Taxon
- macadamia (Macadamia integrifolia)Macadamia integrifoliae0
- Treatment
- High P application (800 mg P pot−1)e1
- Outcome
- cluster root numbere1
- Direction
- suppressede1
- Value
- around 50%e1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Cluster roots enhance phosphorus (P) acquisition in macadamia (Macadamia integrifolia)”
e1“High P application (800 mg P pot−1) suppressed cluster root number by around 50%”
Claim · model-written summary
High phosphorus suppression of cluster roots corresponded to leaf phosphorus concentrations of about 1.05 mg g−1.
- Taxon
- macadamia (Macadamia integrifolia)Macadamia integrifoliae0
- Treatment
- High P application (800 mg P pot−1)e1
- Outcome
- leaf P concentrationse1
- Value
- ~1.05 mg g−1e1
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Cluster roots enhance phosphorus (P) acquisition in macadamia (Macadamia integrifolia)”
e1“High P application (800 mg P pot−1) suppressed cluster root number by around 50%, corresponding to leaf P concentrations of ~1.05 mg g−1”
Claim · model-written summary
Scions and rootstocks affected cluster root development.
- Taxon
- macadamia (Macadamia integrifolia)Macadamia integrifoliae0
- Material
- Scions and rootstockse1
- Outcome
- cluster root developmente1
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Cluster roots enhance phosphorus (P) acquisition in macadamia (Macadamia integrifolia)”
e1“Scions and rootstocks influenced cluster root development”
Claim · model-written summary
H2 rootstock supported more cluster roots than Beaumont.
- Taxon
- macadamia (Macadamia integrifolia)Macadamia integrifoliae0
- Material
- H2 rootstocke1
- Outcome
- cluster rootse1
- Direction
- moree1
- Comparator
- Beaumonte1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Cluster roots enhance phosphorus (P) acquisition in macadamia (Macadamia integrifolia)”
e1“the H2 rootstock supporting more cluster roots than Beaumont”
The same questions in other papers
phosphorus · growth · Macadamia integrifolia (macadamia nut)Results agree
1 paper in the same direction as this paper
- positive
Claims are grouped by organism, treatment and what was measured or targeted. A paper counts as positive when any of its claims in the group is positive.